Haystack vs Yellow vs Semantic Kernel vs Pipecat

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
Haystack
vs
Competitor 1
Yellow
Competitor 2
Semantic Kernel
Competitor 3
Pipecat
Compare
4 tools · best value per row highlighted
Your tool Haystack
haystack.deepset.ai
Haystack is an open-source AI orchestration framework from deepset for building production-grade LLM applications and agents.
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Competitor Yellow
yellow.ai
Yellow.ai is an enterprise platform for building AI agents that handle customer and employee conversations.
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Competitor Semantic Kernel
learn.microsoft.com
Semantic Kernel is a lightweight, open-source development kit from Microsoft for building AI agents and adding AI models to existing C#, Python or Java codebases.
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Competitor Pipecat
pipecat.ai
Pipecat is an open-source Python framework for building voice and multimodal AI agents that talk in real time.
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Traffic estimated monthly website traffic
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Bounce rate lower is better
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Pricing
Model
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Free
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Free
Starting price
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Free
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Free tier
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Free trial
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API access
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Plans
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Free FreeEnterprise Custom
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Open source Free
Capabilities input → output
Input
CodeDocuments
DocumentsText
CodeText
AudioTextVideo
Output
Apps
Apps
Apps
AudioText
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Business & MarketingChatbots & CompanionsProductivity & OfficeAI Agent+3 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeVoice & SpeechAI Agent+2 more
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
7
15
5
10
Agent creation
Agents
Developer tools
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Voice agents
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LLM development
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RAG
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Agent testing
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Self hosted
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Customer support
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Call answering
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Call center automation
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Chatbots
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Customer support automation
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Customer support chatbot
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Voice
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Voice assistance
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API integrations
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Agent collaboration
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Agent memory
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Call agents
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Calls
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Chatbot building
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Conversation automation
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Knowledge bases
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Community on aitoolstime
Rating
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Upvotes
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Saves
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Reviews
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Prompts
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Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.